Epic has made radical changes to its business in the past few weeks, opening up a new subscription system for Unreal Engine licensing and committing to making the engine code open source on GitHub.

Today Epic offered a preview of what's coming in the Unreal Engine 4.1 update, launching a preview build and a livestreamed Q&A session as the company seeks to -- as Epic VP Paul Meegan told Gamasutra in a recent interview -- "restore having a direct relationship with the people who play our games and use our technology."

Notably, a preview build of the 4.1 engine should be available for subscribers to download from GitHub right now, though Epic cautions that it doesn't include all of the features of UE 4.1.